Answer:
I am the reaction after enjoying soda.
Poor people have it. Rich people need it. If you eat it you die. What is it?
My first is high my second damp my whole a tie a writer's cramp.
What can you hold in your right hand but not in your left hand?
What can run but never walks licks but never talks has a bed but never sleeps has a mouth but never eats?
How do you know if a sniper likes you?